In September, Janine became the first black rhinoceros born at the zoo in more than 45 years.

She was named after zoo supporter Janine Dillon Fragasso. The baby rhino was born on the same day Fragrasso and her husband were married.

"And as soon as we met her, we fell in love," said Fragasso.

The Fragassos then contacted the zoo about having a chance to name the baby rhino.

"We were looking for a name that would suit the baby rhino's strong personality and spirit," said Barbara Baker, zoo president and CEO. "But we also wanted a name that had special meaning. Janine means spirit and magical creature.

Only 4,800 black rhinoceroses remain in the wild, the zoo said. The population declined by 96 percent from 1970 to 1992.

Photos: Pittsburgh Zoo names baby rhino

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The Pittsburgh Zoo and PPG Aquarium is putting its own spin on Cinco de Mayo this Sunday to celebrate its newest baby rhino.